I ordered two HS-311 continuos rotation servos and they are very similar to the unmodified HS-311 I ordered for the Rangefinder, except their are dials with three wires sticking out of them (green, yellow, red). When I twist them they seem to make the servos reverse their rotation, with the rangefinder upgrade does it matter which position the dials are at to make the servos respond to the rangefinder? Because they don't seem to respond to the rangefinder unless they are in a certain position.